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$131+ Cheap flights from St. Louis (STL) to Mexico

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/6. Fares are subject to change and may not be available on all flights or dates of travel.
STL — MEX
may. 6 — may. 131
mar. 5/6
mar. 5/13
1 adult, Economy
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Cheap flight deals from St. Louis to Mexico

Keep the following information in mind while searching for St. Louis to Mexico flight deals. Data was last updated mayo 1, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$312
(Cheapflightsfares)

One-way from

$131
(Cheapflightsfares)

Popular in

December

Cheapest in

May

Average price

$557

Good round-trip deal

$434 or less

Good one-way deal

$189 or less
Provider with most accurate pricing for Lambert-St Louis-Mexico City Benito Juarez flight deals.
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Provider most trusted by Cheapflights users for Lambert-St Louis-Mexico City Benito Juarez flights.
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From Lambert-St Louis to Mexico
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One-way flight from Lambert-St Louis to Mexico
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Highest demand for flights based on searches. 5% potential increase in price ($37 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($13 potential savings vs. average RT price).
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Average for round-trip flights in May 2025
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Price to beat on a round-trip flight from Lambert-St Louis to Mexico.
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Price to beat on a one-way flight from Lambert-St Louis to Mexico.
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Find flight deals from St. Louis to Mexico

Cheapest flights from St. Louis to Mexico
Explore the most affordable flight options available from St. Louis to Mexico. Find the lowest fares from popular airlines and budget airlines, with prices last updated on mayo 1, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 6/126:36 pmSTL - CUN
1 stop14h 19mSpirit Airlines
lun. 6/1610:00 amCUN - STL
1 stop8h 18mSpirit Airlines
Deal found 4/30$312
This CheapOair deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 6/126:36 pmSTL - CUN
1 stop14h 19mMultiple Airlines
mar. 6/1712:35 pmCUN - STL
Nonstop3h 25mMultiple Airlines
Deal found 4/30$328
This Cheapflightsfares deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 5/166:10 amSTL - CUN
Nonstop3h 12mFrontier
vie. 5/2312:37 pmCUN - STL
Nonstop3h 23mFrontier
Deal found 4/30$378
This Delta deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 5/316:00 amSTL - SJD
1 stop7h 43mDelta
sáb. 6/76:03 amSJD - STL
2 stops13h 28mDelta
Deal found 4/30$394
This CheapOair deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 5/36:38 amSTL - CUN
Nonstop3h 12mVolaris
lun. 5/1212:37 pmCUN - STL
Nonstop3h 23mVolaris
Deal found 4/30$417
This SmartFares deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 6/77:05 amSTL - SJD
1 stop7h 38mAeromexico
sáb. 6/141:42 pmSJD - STL
1 stop8h 09mAeromexico
Deal found 4/30$423
This Delta deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 6/36:00 amSTL - PVR
1 stop7h 30mDelta
mar. 6/103:23 pmPVR - STL
1 stop8h 20mDelta
Deal found 4/30$428
This American Airlines deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 6/217:45 amSTL - PVR
1 stop8h 00mAmerican Airlines
sáb. 6/281:37 pmPVR - STL
2 stops9h 38mAmerican Airlines
Deal found 4/30$432
This Air Canada deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 5/91:30 pmSTL - MEX
1 stop10h 25mAir Canada
mié. 6/47:10 amMEX - STL
1 stop11h 48mAir Canada
Deal found 4/30$440
This Kiwi.com deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 5/175:45 pmSTL - MEX
1 stop26h 50mMultiple Airlines
jue. 5/2211:05 amMEX - STL
1 stop11h 47mMultiple Airlines
Deal found 4/30$441
This United Airlines deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 6/155:00 amSTL - SJD
2 stops9h 50mUnited Airlines
lun. 6/162:50 pmSJD - STL
1 stop7h 09mUnited Airlines
Deal found 4/30$451
This Delta deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 5/207:05 amSTL - GDL
2 stops13h 00mDelta
mar. 5/279:27 amGDL - STL
2 stops13h 11mDelta
Deal found 4/30$470

Cheapflights Fare Finder

Customize your flight search to find flights from St. Louis to Mexico that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated mayo 1, 2025.
Use the filters below to find and compare flights from St. Louis to Mexico that are best for you.

Fly from

St. Louis

Fly to

Mexico

Route

Depart

Return

Price

St. LouisCancún

STL - CUN

STLCUN

Lambert-St Louis

jue. 6/12

6:36 pm-8:55 am

1 stop14h 19m

Cancun

lun. 6/16

10:00 am-6:18 pm

1 stop8h 18m

$312

St. LouisCancún

STL - CUN

STLCUN

Lambert-St Louis

jue. 6/12

6:36 pm-8:55 am

1 stop14h 19m

Cancun

mar. 6/17

12:35 pm-4:00 pm

Nonstop3h 25m

$328

St. LouisCancún

STL - CUN

STLCUN

Lambert-St Louis

vie. 5/16

6:10 am-9:22 am

Nonstop3h 12m

Cancun

vie. 5/23

12:37 pm-4:00 pm

Nonstop3h 23m

$378

St. LouisSan José del Cabo

STL - SJD

STLSJD

Lambert-St Louis

sáb. 5/31

6:00 am-3:45 pm

2 stops11h 45m

San José del Cabo Los Cabos

sáb. 6/7

6:03 am-9:31 pm

2 stops13h 28m

$394

St. LouisCancún

STL - CUN

STLCUN

Lambert-St Louis

sáb. 8/23

10:22 am-1:35 pm

Nonstop3h 13m

Cancun

dom. 8/31

2:50 pm-6:07 pm

Nonstop3h 17m

$420

St. LouisSan José del Cabo

STL - SJD

STLSJD

Lambert-St Louis

sáb. 6/7

7:05 am-12:43 pm

1 stop7h 38m

San José del Cabo Los Cabos

sáb. 6/14

1:42 pm-11:51 pm

1 stop8h 09m

$423

St. LouisPuerto Vallarta

STL - PVR

STLPVR

Lambert-St Louis

mar. 6/3

6:00 am-12:30 pm

1 stop7h 30m

Puerto Vallarta Ordaz

mar. 6/10

3:23 pm-12:43 am

1 stop8h 20m

$428

St. LouisPuerto Vallarta

STL - PVR

STLPVR

Lambert-St Louis

sáb. 6/21

7:45 am-2:45 pm

1 stop8h 00m

Puerto Vallarta Ordaz

sáb. 6/28

1:37 pm-12:15 am

2 stops9h 38m

$432

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

vie. 5/16

1:30 pm-10:55 pm

1 stop10h 25m

Mexico City Benito Juarez

mié. 5/21

7:10 am-7:58 pm

1 stop11h 48m

$440

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

sáb. 5/17

5:45 pm-7:35 pm

1 stop26h 50m

Mexico City Benito Juarez

jue. 5/22

11:05 am-11:52 pm

1 stop11h 47m

$441

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Showing 1-10 of 57 results
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Best time to book a flight from St. Louis to Mexico

Have a flexible travel schedule? Discover the best time to fly to Mexico from St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Mexico

What is the cheapest month to book a flight from St. Louis to Mexico?

Currently, May is the cheapest month in which you can book a flight from St. Louis to Mexico (average of $400). Flying from St. Louis to Mexico in December is currently the most expensive (average of $615). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from STL to MX?

Find hourly flight availability from St. Louis to Mexico. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated mayo 1, 2025.

When flying from St. Louis to Mexico, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Mexico by month

Plan your trip to Mexico by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Mexico ranges from 0.0 - 4.7 inches per month. July is typically the wettest month, when rainfall can reach 4.7 in. January is typically the driest time to visit Mexico when rainfall is around 0.0 in.

Temperature in Mexico by month

Plan your trip to Mexico by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Mexico, use this chart to help with planning. For those seeking warmer temperatures, May is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 55.4 F).

Reviews of airlines servicing Mexico

Get insights into the airlines that provide service to Mexico. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Mexico. Reviews last updated mayo 1, 2025.
Read reviews from past customers who have flown Alaska Airlines, Southwest and Delta from St. Louis to Mexico. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,972 reviews

Comfort

7.9

Boarding

8.1

Entertainment

7.1

Overall

8.0

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
9,972 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Comfort

7.9

Boarding

8.1

Entertainment

7.1

Overall

8.0

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,294 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Comfort

7.9

Boarding

8.1

Entertainment

7.1

Overall

8.0

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,934 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Comfort

7.9

Boarding

8.1

Entertainment

7.1

Overall

8.0

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Aeromexico
7.5
Good
1,698 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Comfort

7.9

Boarding

8.1

Entertainment

7.1

Overall

8.0

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,696 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Comfort

7.9

Boarding

8.1

Entertainment

7.1

Overall

8.0

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Mexico. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from St. Louis to Mexico?

    Lambert-St Louis (STL), located 12.7 mi from the city center, is the airport you fly out of when you book flights from St. Louis to Mexico.

  • What are the cheapest airlines to fly from St. Louis to Mexico one-way?

    For one-way options, check prices for Spirit Airlines. According to our data, you can fly for as low as $131. Users have also found prices from $162 and $170 on Frontier and Southwest, respectively.

  • What are the most popular routes from St. Louis to Mexico?

    The most popular route from St. Louis to Mexico is Lambert-St Louis - Cancun. You may also consider Lambert-St Louis - Cozumel or Lambert-St Louis - Mexico City Benito Juarez.

  • Can I find deals for flights from St. Louis to Mexico that include hotel bookings?

    Yes. In addition to deals on St. Louis to Mexico flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Mexico?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Mexico.

  • Can I find deals for business class flights from St. Louis to Mexico?

    Yes. Cheapflights offers flight deals from St. Louis to Mexico by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from St. Louis to Mexico?

    Currently, May is the cheapest month in which you can book a flight from St. Louis to Mexico (average of $400). Flying from St. Louis to Mexico in December is currently the most expensive (average of $615). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for St. Louis to Mexico

See prices for flight routes from nearby airports that may be better suited for you.
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Top 8 airlines flying from St. Louis to Mexico

Discover the top 8 airlines that operate flights from St. Louis to Mexico. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated mayo 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
VolarisCheapest$175Average$377FlexibilityNo cancel feeOn-time79%
FrontierCheapest$303Average$551FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$306Average$569FlexibilityNo cancel feeOn-time71%
AeromexicoCheapest$331Average$509FlexibilityNo cancel feeOn-timeN/A
DeltaCheapest$358Average$546FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$387Average$615FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$398Average$528FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$517Average$738FlexibilityNo cancel feeOn-time63%

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